I have an IQ180 and an H2 and want to try photographing star trails. The info I have relates to using DSLRs and all recommend making sure "NR (Noise Reduction) is set to OFF on your camera!!. Otherwise, the camera will spend equal amount of time (30 seconds) doing dark-frame subtraction resulting in gaps in your trails."
How do I stop the IQ180 from taking a dark frame? There is nothing about this in the IQ180's or the H2's manuals.
Roger